?The standard entropies at 298 K for certain group 4A elements are: C(s, diamond) = 2.43

Chapter 19, Problem 19.49

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The standard entropies at 298 K for certain group 4A elements are: C(s, diamond) = 2.43 J/mol-K, Si(s) = 18.81 J/mol-K, Ge(s) = 31.09 J/mol-K, and Sn(s) = 51.818 J/ mol-K. All but Sn have the same (diamond) structure. How do you account for the trend in the \(\mathrm{S}^{\circ}\) values?

Text Transcription:

{S}^{\circ}